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parser.c
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parser.c
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/*
* nuster parser related variables and functions.
*
* Copyright (C) Jiang Wenyuan, < koubunen AT gmail DOT com >
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <haproxy/cfgparse.h>
#include <haproxy/errors.h>
#include <haproxy/global.h>
#include <haproxy/acl.h>
#include <haproxy/tools.h>
#include <nuster/nuster.h>
const char *nst_cache_flt_id = "nuster cache id";
const char *nst_nosql_flt_id = "nuster nosql id";
static nst_key_element_t *
_nst_parse_rule_key_cast(char *str) {
nst_key_element_t *key = NULL;
if(!strcmp(str, "method")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_METHOD;
key->data = NULL;
} else if(!strcmp(str, "scheme")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_SCHEME;
key->data = NULL;
} else if(!strcmp(str, "host")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_HOST;
key->data = NULL;
} else if(!strcmp(str, "uri")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_URI;
key->data = NULL;
} else if(!strcmp(str, "path")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_PATH;
key->data = NULL;
} else if(!strcmp(str, "delimiter")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_DELIMITER;
key->data = NULL;
} else if(!strcmp(str, "query")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_QUERY;
key->data = NULL;
} else if(!strncmp(str, "param_", 6) && strlen(str) > 6) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_PARAM;
key->data = strdup(str + 6);
} else if(!strncmp(str, "header_", 7) && strlen(str) > 7) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_HEADER;
key->data = strdup(str + 7);
} else if(!strncmp(str, "cookie_", 7) && strlen(str) > 7) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_COOKIE;
key->data = strdup(str + 7);
} else if(!strcmp(str, "body")) {
key = malloc(sizeof(*key));
key->type = NST_KEY_ELEMENT_BODY;
key->data = NULL;
}
return key;
}
static nst_key_element_t **
_nst_parse_rule_key(char *str) {
nst_key_element_t **pk = NULL;
char *tmp = strdup(str);
int i = 0;
char *m;
m = strtok(tmp, ".");
while(m) {
nst_key_element_t *key = _nst_parse_rule_key_cast(m);
if(!key) {
goto err;
}
pk = realloc(pk, (i + 1) * sizeof(nst_key_element_t *));
pk[i++] = key;
m = strtok(NULL, ".");
}
if(!pk) {
goto err;
}
pk = realloc(pk, (i + 1) * sizeof(nst_key_element_t *));
pk[i] = NULL;
free(tmp);
return pk;
err:
if(pk) {
while(i--) {
free(pk[i]);
}
free(pk);
}
free(tmp);
return NULL;
}
static nst_rule_code_t *
_nst_parse_rule_code(char *str) {
if(!strcmp(str, "all")) {
return NULL;
} else {
nst_rule_code_t *code = NULL;
char *tmp = strdup(str);
char *m = strtok(tmp, ",");
/* warn ","? */
while(m) {
int i = atoi(m);
nst_rule_code_t *cc = malloc(sizeof(*cc));
cc->code = i;
if(code) {
cc->next = code;
} else {
cc->next = NULL;
}
code = cc;
m = strtok(NULL, ",");
}
free(tmp);
return code;
}
}
/*
* Parse size
*/
const char *
nst_parse_size(const char *text, uint64_t *ret) {
uint64_t value = 0;
while(1) {
unsigned int i;
i = *text - '0';
if(i > 9) {
break;
}
if(value > ~0ULL / 10) {
goto end;
}
value *= 10;
if(value > (value + i)) {
goto end;
}
value += i;
text++;
}
switch(*text) {
case '\0':
break;
case 'M':
case 'm':
if(value > ~0ULL >> 20) {
goto end;
}
value = value << 20;
break;
case 'G':
case 'g':
if(value > ~0ULL >> 30) {
goto end;
}
value = value << 30;
break;
default:
return text;
}
if(*text != '\0' && *++text != '\0') {
return text;
}
if(value < NST_DEFAULT_SIZE) {
value = NST_DEFAULT_SIZE;
}
*ret = value;
return NULL;
end:
*ret = NST_DEFAULT_SIZE;
return NULL;
}
/*
* Parse time
* The value is returned in ret if everything is fine, and a NST_TIME_OK is returned
* 0 <= ret < 2^31(2147483648)
* If the value is equal to or greater than 2^31, NST_TIME_OVER is returned.
* If the value is equal to or greater than 2^64, NST_TIME_UNDER is returned.
* NST_TIME_ERR is returned in case of error
*/
int
nst_parse_time(const char *text, int len, uint32_t *ret) {
uint64_t imult, idiv, omult, odiv;
uint64_t value, result;
int text_len = len;
if(*text - '0' > 9) {
return NST_TIME_ERR;
}
omult = odiv = imult = idiv = 1;
value = 0;
while(len--) {
unsigned int j;
j = *text - '0';
if(j > 9) {
switch(*text) {
case 's':
break;
case 'm':
imult = 60;
break;
case 'h':
imult = 3600;
break;
case 'd':
imult = 86400;
break;
default:
return NST_TIME_ERR;
break;
}
break;
}
text++;
value *= 10;
value += j;
}
if(len > 0) {
return NST_TIME_ERR;
}
if(text_len >= sizeof("2147483648d")) {
return NST_TIME_OVER;
}
if(omult % idiv == 0) {
omult /= idiv;
idiv = 1;
}
if(idiv % omult == 0) {
idiv /= omult;
omult = 1;
}
if(imult % odiv == 0) {
imult /= odiv;
odiv = 1;
}
if(odiv % imult == 0) {
odiv /= imult;
imult = 1;
}
result = (value * (imult * omult) + (idiv * odiv - 1)) / (idiv * odiv);
if(result >= 0x80000000) {
return NST_TIME_OVER;
}
*ret = result;
return NST_TIME_OK;
}
int
nuster_parse_global_manager(const char *file, int line, char **args) {
int err_code = 0;
int cur_arg = 1;
if(global.nuster.manager.status != NST_STATUS_UNDEFINED) {
ha_warning("parsing [%s:%d]: [%s] already specified. Ignore.\n", file, line, args[0]);
err_code |= ERR_ALERT;
goto out;
}
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.manager.status = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.manager.status = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.manager.purge_method = ist(NST_MANAGER_DEFAULT_PURGE_METHOD);
global.nuster.manager.uri = ist(NST_MANAGER_DEFAULT_URI);
cur_arg++;
while(*(args[cur_arg]) !=0) {
if(!strcmp(args[cur_arg], "purge-method")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] purge-method expects an argument.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.manager.purge_method.ptr = strdup(args[cur_arg]);
global.nuster.manager.purge_method.len = strlen(args[cur_arg]);
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "uri")) {
cur_arg++;
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s] uri expects a uri as argument.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.manager.uri.ptr = strdup(args[cur_arg]);
global.nuster.manager.uri.len = strlen(args[cur_arg]);
cur_arg++;
continue;
}
ha_alert("parsing [%s:%d]: [%s] Unrecognized '%s'.\n", file, line, args[0], args[cur_arg]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
out:
return err_code;
}
int
nuster_parse_global_cache(const char *file, int line, char **args) {
int err_code = 0;
int cur_arg = 1;
if(global.nuster.cache.status != NST_STATUS_UNDEFINED) {
ha_warning("parsing [%s:%d]: [%s] already specified. Ignore.\n", file, line, args[0]);
err_code |= ERR_ALERT;
goto out;
}
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.cache.status = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.cache.status = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
while(*(args[cur_arg]) !=0) {
if(!strcmp(args[cur_arg], "data-size")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] data-size expects a size.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(nst_parse_size(args[cur_arg],
&global.nuster.cache.data_size)) {
ha_alert("parsing [%s:%d]: [%s] invalid data_size, expects [m|M|g|G].\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "dict-size")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] dict-size expects a size.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(nst_parse_size(args[cur_arg],
&global.nuster.cache.dict_size)) {
ha_alert("parsing [%s:%d]: [%s] invalid dict-size, expects [m|M|g|G].\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "dir")) {
cur_arg++;
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s]: dir expects a dir as argument.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.root.ptr = strdup(args[cur_arg]);
global.nuster.cache.root.len = strlen(args[cur_arg]);
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "dict-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] dict-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.dict_cleaner = atoi(args[cur_arg]);
if(global.nuster.cache.dict_cleaner <= 0) {
global.nuster.cache.dict_cleaner = NST_DEFAULT_DICT_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "data-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] data-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.data_cleaner = atoi(args[cur_arg]);
if(global.nuster.cache.data_cleaner <= 0) {
global.nuster.cache.data_cleaner = NST_DEFAULT_DATA_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.disk_cleaner = atoi(args[cur_arg]);
if(global.nuster.cache.disk_cleaner <= 0) {
global.nuster.cache.disk_cleaner = NST_DEFAULT_DISK_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-loader")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-loader expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.disk_loader = atoi(args[cur_arg]);
if(global.nuster.cache.disk_loader <= 0) {
global.nuster.cache.disk_loader = NST_DEFAULT_DISK_LOADER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-saver")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-saver expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.cache.disk_saver = atoi(args[cur_arg]);
if(global.nuster.cache.disk_saver <= 0) {
global.nuster.cache.disk_saver = NST_DEFAULT_DISK_SAVER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "clean-temp")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.cache.clean_temp = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.cache.clean_temp = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "always-check-disk")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.cache.always_check_disk = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.cache.always_check_disk = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
ha_alert("parsing [%s:%d]: [%s] Unrecognized '%s'.\n", file, line, args[0], args[cur_arg]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
out:
return err_code;
}
int
nuster_parse_global_nosql(const char *file, int line, char **args) {
int err_code = 0;
int cur_arg = 1;
if(global.nuster.nosql.status != NST_STATUS_UNDEFINED) {
ha_warning("parsing [%s:%d]: [%s] already specified. Ignore.\n", file, line, args[0]);
err_code |= ERR_ALERT;
goto out;
}
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.nosql.status = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.nosql.status = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
while(*(args[cur_arg]) !=0) {
if(!strcmp(args[cur_arg], "dict-size")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] dict-size expects a size.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(nst_parse_size(args[cur_arg], &global.nuster.nosql.dict_size)) {
ha_alert("parsing [%s:%d]: [%s] invalid dict-size, expects [m|M|g|G].\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "data-size")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] data-size expects a size.\n", file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(nst_parse_size(args[cur_arg], &global.nuster.nosql.data_size)) {
ha_alert("parsing [%s:%d]: [%s] invalid data_size, expects [m|M|g|G].\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "dir")) {
cur_arg++;
if(*(args[cur_arg]) == 0) {
ha_alert("parsing [%s:%d]: [%s]: `dir` expects a dir as argument.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.root.ptr = strdup(args[cur_arg]);
global.nuster.nosql.root.len = strlen(args[cur_arg]);
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "dict-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] dict-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.dict_cleaner = atoi(args[cur_arg]);
if(global.nuster.nosql.dict_cleaner <= 0) {
global.nuster.nosql.dict_cleaner = NST_DEFAULT_DICT_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "data-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] data-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.data_cleaner = atoi(args[cur_arg]);
if(global.nuster.nosql.data_cleaner <= 0) {
global.nuster.nosql.data_cleaner = NST_DEFAULT_DATA_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-cleaner")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-cleaner expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.disk_cleaner = atoi(args[cur_arg]);
if(global.nuster.nosql.disk_cleaner <= 0) {
global.nuster.nosql.disk_cleaner = NST_DEFAULT_DISK_CLEANER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-loader")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-loader expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.disk_loader = atoi(args[cur_arg]);
if(global.nuster.nosql.disk_loader <= 0) {
global.nuster.nosql.disk_loader = NST_DEFAULT_DISK_LOADER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "disk-saver")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] disk-saver expects a number.\n",
file, line, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
global.nuster.nosql.disk_saver = atoi(args[cur_arg]);
if(global.nuster.nosql.disk_saver <= 0) {
global.nuster.nosql.disk_saver = NST_DEFAULT_DISK_SAVER;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "clean-temp")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.nosql.clean_temp = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.nosql.clean_temp = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
if(!strcmp(args[cur_arg], "always-check-disk")) {
cur_arg++;
if(*args[cur_arg] == 0) {
ha_alert("parsing [%s:%d]: [%s] expects 'on' or 'off' as argument.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if(!strcmp(args[cur_arg], "off")) {
global.nuster.nosql.always_check_disk = NST_STATUS_OFF;
} else if(!strcmp(args[cur_arg], "on")) {
global.nuster.nosql.always_check_disk = NST_STATUS_ON;
} else {
ha_alert("parsing [%s:%d]: [%s] only supports 'on' and 'off'.\n", file, line,
args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cur_arg++;
continue;
}
ha_alert("parsing [%s:%d]: [%s] Unrecognized '%s'.\n", file, line, args[0], args[cur_arg]);