154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
#include "conf.h"
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/* 在content中，设置变量(var)的首地址，值(val)的位置首地址和末地址，返回下一行指针 */
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static char *set_var_val_lineEnd(char *content, char **var, char **val_begin, char **val_end)
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{
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char *p, *pn, *lineEnd;
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;
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int val_len;
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while (1) {
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if (content == NULL)
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return NULL;
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for (; *content == ' ' || *content == '\t' || *content == '\r' || *content == '\n'; content++) ;
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if (*content == '\0')
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return NULL;
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*var = content;
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pn = strchr(content, '\n');
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p = strchr(content, '=');
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if (p == NULL) {
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if (pn) {
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content = pn + 1;
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continue;
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} else
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return NULL;
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}
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content = p;
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//将变量以\0结束
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for (p--; *p == ' ' || *p == '\t'; p--) ;
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*(p + 1) = '\0';
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//值的首地址
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for (content++; *content == ' ' || *content == '\t'; content++) ;
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if (*content == '\0')
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return NULL;
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//双引号引起来的值支持换行
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if (*content == '"') {
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*val_begin = content + 1;
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*val_end = strstr(*val_begin, "\";");
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if (*val_end != NULL)
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break;
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} else
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*val_begin = content;
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*val_end = strchr(content, ';');
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if (pn && *val_end > pn) {
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content = pn + 1;
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continue;
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}
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break;
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}
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if (*val_end) {
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**val_end = '\0';
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val_len = *val_end - *val_begin;
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lineEnd = *val_end;
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} else {
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val_len = strlen(*val_begin);
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*val_end = lineEnd = *val_begin + val_len;
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}
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*val_end = *val_begin + val_len;
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//printf("var[%s]\nbegin[%s]\n\n", *var, *val_begin);
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return lineEnd;
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}
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static void parse_global_module(char *content, conf * p)
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{
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char *var, *val_begin, *val_end, *lineEnd;
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int val_begin_len;
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while ((lineEnd = set_var_val_lineEnd(content, &var, &val_begin, &val_end)) != NULL) {
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if (strcasecmp(var, "IP_SEGMENT") == 0) {
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val_begin_len = strlen(val_begin) + 1;
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p->IP_SEGMENT = (char *)malloc(val_begin_len);
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memset(p->IP_SEGMENT, 0, val_begin_len);
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memcpy(p->IP_SEGMENT, val_begin, val_begin_len);
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}
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if (strcasecmp(var, "IP_RESTRICTION") == 0) {
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p->IP_RESTRICTION = atoi(val_begin);
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}
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content = strchr(lineEnd + 1, '\n');
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}
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}
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/* 在buff中读取模块(global http https httpdns httpudp)内容 */
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static char *read_module(char *buff, const char *module_name)
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{
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int len;
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char *p, *p0;
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len = strlen(module_name);
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p = buff;
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while (1) {
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while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
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p++;
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if (strncasecmp(p, module_name, len) == 0) {
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p += len;
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while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
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p++;
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if (*p == '{')
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break;
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}
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if ((p = strchr(p, '\n')) == NULL)
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return NULL;
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}
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if ((p0 = strchr(++p, '}')) == NULL)
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return NULL;
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return strndup(p, p0 - p);
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}
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void read_conf(char *filename, conf * configure)
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{
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char *buff, *global_content;
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FILE *file;
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long file_size;
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file = fopen(filename, "r");
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if (file == NULL)
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perror("cannot open config file.");
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fseek(file, 0, SEEK_END);
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file_size = ftell(file);
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buff = (char *)alloca(file_size + 1);
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if (buff == NULL)
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perror("out of memory.");
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rewind(file);
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fread(buff, file_size, 1, file);
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fclose(file);
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buff[file_size] = '\0';
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if ((global_content = read_module(buff, "global")) == NULL) {
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perror("read global module error");
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}
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parse_global_module(global_content, configure);
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free(global_content);
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}
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void free_conf(conf * p)
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{
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free(p->IP_SEGMENT);
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return;
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}
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void split_string(char string[], char delims[], char (*whitelist_ip)[32])
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{
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int i = 0;
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char *result = NULL;
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result = strtok(string, delims);
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while (result != NULL) {
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i++;
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strcpy(whitelist_ip[i], result);
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result = strtok(NULL, delims);
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}
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}
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