1b930aa5e1
- 将 config.c 和 proxy.c 中的 strncpy 替换为 memcpy + 显式 null 结尾， 消除 GCC -Wstringop-truncation 警告 - 修复 integration_test.sh 的 kill_server 函数，补充对 -c 配置方式启动的 服务器进程的清理，避免端口占用导致后续测试失败 编译零警告，142 个单元测试 + 80 项集成测试全部通过
482 lines
18 KiB
C
482 lines
18 KiB
C
|
||
/**
|
||
* config.c - JSON 配置文件解析实现
|
||
*
|
||
* 极简 JSON 解析器，只处理 cocoon 配置所需的字段：
|
||
* - 字符串（root_dir, log_level）
|
||
* - 整数（port, num_workers, max_connections, timeout_ms）
|
||
* - 布尔值（threaded）
|
||
*
|
||
* 保持零依赖，不引入外部 JSON 库。
|
||
*
|
||
* @author xfy
|
||
*/
|
||
|
||
#include "config.h"
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <ctype.h>
|
||
#include <errno.h>
|
||
|
||
/* === 内部：极简 JSON token 类型 === */
|
||
typedef enum {
|
||
TOKEN_EOF,
|
||
TOKEN_LBRACE, /* { */
|
||
TOKEN_RBRACE, /* } */
|
||
TOKEN_STRING, /* "..." */
|
||
TOKEN_NUMBER, /* 123 */
|
||
TOKEN_TRUE, /* true */
|
||
TOKEN_FALSE, /* false */
|
||
TOKEN_LBRACKET, /* [ */
|
||
TOKEN_RBRACKET, /* ] */
|
||
TOKEN_COMMA, /* , */
|
||
TOKEN_COLON, /* : */
|
||
TOKEN_INVALID /* 错误 */
|
||
} token_type_t;
|
||
|
||
typedef struct {
|
||
token_type_t type;
|
||
const char *start;
|
||
size_t len;
|
||
int line;
|
||
} token_t;
|
||
|
||
typedef struct {
|
||
const char *src;
|
||
size_t pos;
|
||
size_t len;
|
||
int line;
|
||
} parser_t;
|
||
|
||
/* === 内部：parser 辅助函数 === */
|
||
|
||
static void parser_init(parser_t *p, const char *src, size_t len) {
|
||
p->src = src;
|
||
p->pos = 0;
|
||
p->len = len;
|
||
p->line = 1;
|
||
}
|
||
|
||
static void parser_skip_ws(parser_t *p) {
|
||
while (p->pos < p->len) {
|
||
char c = p->src[p->pos];
|
||
if (c == ' ' || c == '\t' || c == '\r') {
|
||
p->pos++;
|
||
} else if (c == '\n') {
|
||
p->pos++;
|
||
p->line++;
|
||
} else if (c == '/' && p->pos + 1 < p->len && p->src[p->pos + 1] == '/') {
|
||
/* 跳过 // 注释 */
|
||
p->pos += 2;
|
||
while (p->pos < p->len && p->src[p->pos] != '\n') p->pos++;
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static token_t parser_next_token(parser_t *p) {
|
||
parser_skip_ws(p);
|
||
token_t t = {TOKEN_INVALID, NULL, 0, p->line};
|
||
|
||
if (p->pos >= p->len) {
|
||
t.type = TOKEN_EOF;
|
||
return t;
|
||
}
|
||
|
||
const char *start = p->src + p->pos;
|
||
char c = start[0];
|
||
|
||
switch (c) {
|
||
case '{': p->pos++; t.type = TOKEN_LBRACE; return t;
|
||
case '}': p->pos++; t.type = TOKEN_RBRACE; return t;
|
||
case '[': p->pos++; t.type = TOKEN_LBRACKET; return t;
|
||
case ']': p->pos++; t.type = TOKEN_RBRACKET; return t;
|
||
case ',': p->pos++; t.type = TOKEN_COMMA; return t;
|
||
case ':': p->pos++; t.type = TOKEN_COLON; return t;
|
||
case '"': {
|
||
/* 字符串 */
|
||
p->pos++; /* skip " */
|
||
t.start = p->src + p->pos;
|
||
while (p->pos < p->len && p->src[p->pos] != '"') {
|
||
if (p->src[p->pos] == '\\' && p->pos + 1 < p->len) {
|
||
p->pos += 2; /* skip escaped */
|
||
} else {
|
||
p->pos++;
|
||
}
|
||
}
|
||
t.len = (size_t)(p->src + p->pos - t.start);
|
||
if (p->pos < p->len) p->pos++; /* skip closing " */
|
||
t.type = TOKEN_STRING;
|
||
return t;
|
||
}
|
||
default: {
|
||
if (isdigit(c) || c == '-') {
|
||
/* 数字 */
|
||
t.start = start;
|
||
p->pos++;
|
||
while (p->pos < p->len && (isdigit(p->src[p->pos]) || p->src[p->pos] == '.')) {
|
||
p->pos++;
|
||
}
|
||
t.len = (size_t)(p->src + p->pos - t.start);
|
||
t.type = TOKEN_NUMBER;
|
||
return t;
|
||
} else if (strncmp(start, "true", 4) == 0) {
|
||
p->pos += 4;
|
||
t.type = TOKEN_TRUE;
|
||
return t;
|
||
} else if (strncmp(start, "false", 5) == 0) {
|
||
p->pos += 5;
|
||
t.type = TOKEN_FALSE;
|
||
return t;
|
||
}
|
||
/* 未知 token */
|
||
p->pos++;
|
||
t.type = TOKEN_INVALID;
|
||
return t;
|
||
}
|
||
}
|
||
}
|
||
|
||
static bool token_expect(parser_t *p, token_type_t expected) {
|
||
token_t t = parser_next_token(p);
|
||
return t.type == expected;
|
||
}
|
||
|
||
/* 复制 token 内容为 C 字符串（处理转义） */
|
||
static char *token_str_dup(const token_t *t) {
|
||
char *buf = (char *)malloc(t->len + 1);
|
||
if (!buf) return NULL;
|
||
|
||
size_t j = 0;
|
||
for (size_t i = 0; i < t->len; i++) {
|
||
if (t->start[i] == '\\' && i + 1 < t->len) {
|
||
char next = t->start[i + 1];
|
||
switch (next) {
|
||
case 'n': buf[j++] = '\n'; i++; break;
|
||
case 't': buf[j++] = '\t'; i++; break;
|
||
case 'r': buf[j++] = '\r'; i++; break;
|
||
case '\\': buf[j++] = '\\'; i++; break;
|
||
case '"': buf[j++] = '"'; i++; break;
|
||
default: buf[j++] = t->start[i]; break;
|
||
}
|
||
} else {
|
||
buf[j++] = t->start[i];
|
||
}
|
||
}
|
||
buf[j] = '\0';
|
||
return buf;
|
||
}
|
||
|
||
static long token_to_long(const token_t *t) {
|
||
char buf[32] = {0};
|
||
size_t n = t->len < 31 ? t->len : 31;
|
||
memcpy(buf, t->start, n);
|
||
return strtol(buf, NULL, 10);
|
||
}
|
||
|
||
static log_level_t str_to_log_level(const char *str) {
|
||
if (strcmp(str, "error") == 0) return LOG_LEVEL_ERROR;
|
||
if (strcmp(str, "warn") == 0) return LOG_LEVEL_WARN;
|
||
if (strcmp(str, "info") == 0) return LOG_LEVEL_INFO;
|
||
if (strcmp(str, "debug") == 0) return LOG_LEVEL_DEBUG;
|
||
return LOG_LEVEL_INFO; /* 默认 */
|
||
}
|
||
|
||
/* === 公共 API === */
|
||
|
||
bool config_load_from_file(const char *path, cocoon_config_t *config) {
|
||
if (!path || !config) return false;
|
||
|
||
FILE *fp = fopen(path, "r");
|
||
if (!fp) {
|
||
fprintf(stderr, "[Config] 无法打开配置文件: %s (%s)\n", path, strerror(errno));
|
||
return false;
|
||
}
|
||
|
||
/* 读取文件内容 */
|
||
fseek(fp, 0, SEEK_END);
|
||
long size = ftell(fp);
|
||
fseek(fp, 0, SEEK_SET);
|
||
|
||
if (size <= 0 || size > 65536) { /* 限制 64KB */
|
||
fclose(fp);
|
||
fprintf(stderr, "[Config] 配置文件过大或为空\n");
|
||
return false;
|
||
}
|
||
|
||
char *buf = (char *)malloc((size_t)size + 1);
|
||
if (!buf) {
|
||
fclose(fp);
|
||
return false;
|
||
}
|
||
|
||
size_t read = fread(buf, 1, (size_t)size, fp);
|
||
fclose(fp);
|
||
buf[read] = '\0';
|
||
|
||
parser_t p;
|
||
parser_init(&p, buf, read);
|
||
|
||
/* 期望 { */
|
||
if (!token_expect(&p, TOKEN_LBRACE)) {
|
||
fprintf(stderr, "[Config] 配置文件格式错误: 期望 '{'\n");
|
||
free(buf);
|
||
return false;
|
||
}
|
||
|
||
/* 解析键值对 */
|
||
while (1) {
|
||
token_t key = parser_next_token(&p);
|
||
if (key.type == TOKEN_RBRACE) break; /* 空对象 {} */
|
||
if (key.type != TOKEN_STRING) {
|
||
fprintf(stderr, "[Config] 第 %d 行: 期望字符串键\n", key.line);
|
||
free(buf);
|
||
return false;
|
||
}
|
||
|
||
if (!token_expect(&p, TOKEN_COLON)) {
|
||
fprintf(stderr, "[Config] 第 %d 行: 键后缺少 ':'\n", key.line);
|
||
free(buf);
|
||
return false;
|
||
}
|
||
|
||
token_t val = parser_next_token(&p);
|
||
char *key_str = token_str_dup(&key);
|
||
|
||
if (strcmp(key_str, "root_dir") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->root_dir); /* 释放旧的 */
|
||
config->root_dir = v;
|
||
}
|
||
} else if (strcmp(key_str, "port") == 0 && val.type == TOKEN_NUMBER) {
|
||
long v = token_to_long(&val);
|
||
if (v > 0 && v < 65536) config->port = (uint16_t)v;
|
||
} else if (strcmp(key_str, "threaded") == 0) {
|
||
if (val.type == TOKEN_TRUE) config->threaded = true;
|
||
else if (val.type == TOKEN_FALSE) config->threaded = false;
|
||
} else if (strcmp(key_str, "num_workers") == 0 && val.type == TOKEN_NUMBER) {
|
||
long v = token_to_long(&val);
|
||
if (v > 0 && v < 1024) config->num_workers = (uint32_t)v;
|
||
} else if (strcmp(key_str, "max_connections") == 0 && val.type == TOKEN_NUMBER) {
|
||
long v = token_to_long(&val);
|
||
if (v >= 0 && v < 1000000) config->max_connections = (uint32_t)v;
|
||
} else if (strcmp(key_str, "timeout_ms") == 0 && val.type == TOKEN_NUMBER) {
|
||
long v = token_to_long(&val);
|
||
if (v >= 0 && v < 3600000) config->timeout_ms = (uint32_t)v;
|
||
} else if (strcmp(key_str, "log_level") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
config->log_level = str_to_log_level(v);
|
||
free(v);
|
||
}
|
||
} else if (strcmp(key_str, "gzip_enabled") == 0) {
|
||
if (val.type == TOKEN_TRUE) config->gzip_enabled = true;
|
||
else if (val.type == TOKEN_FALSE) config->gzip_enabled = false;
|
||
} else if (strcmp(key_str, "brotli_enabled") == 0) {
|
||
if (val.type == TOKEN_TRUE) config->brotli_enabled = true;
|
||
else if (val.type == TOKEN_FALSE) config->brotli_enabled = false;
|
||
} else if (strcmp(key_str, "tls_cert") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->tls_cert);
|
||
config->tls_cert = v;
|
||
}
|
||
} else if (strcmp(key_str, "tls_key") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->tls_key);
|
||
config->tls_key = v;
|
||
}
|
||
} else if (strcmp(key_str, "tls_enabled") == 0) {
|
||
if (val.type == TOKEN_TRUE) config->tls_enabled = true;
|
||
else if (val.type == TOKEN_FALSE) config->tls_enabled = false;
|
||
} else if (strcmp(key_str, "access_log") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->access_log_path);
|
||
config->access_log_path = v;
|
||
}
|
||
} else if (strcmp(key_str, "cors_enabled") == 0) {
|
||
if (val.type == TOKEN_TRUE) config->cors_enabled = true;
|
||
else if (val.type == TOKEN_FALSE) config->cors_enabled = false;
|
||
} else if (strcmp(key_str, "auth_user") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->auth_user);
|
||
config->auth_user = v;
|
||
}
|
||
} else if (strcmp(key_str, "auth_pass") == 0 && val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v) {
|
||
free((void *)config->auth_pass);
|
||
config->auth_pass = v;
|
||
}
|
||
} else if (strcmp(key_str, "rate_limit") == 0 && val.type == TOKEN_NUMBER) {
|
||
long v = token_to_long(&val);
|
||
if (v >= 0 && v < 1000000) config->rate_limit = (uint32_t)v;
|
||
} else if (strcmp(key_str, "plugins") == 0) {
|
||
if (val.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&val);
|
||
if (v && config->num_plugins < COCOON_MAX_PLUGINS) {
|
||
config->plugins[config->num_plugins++] = v;
|
||
}
|
||
} else if (val.type == TOKEN_LBRACKET) {
|
||
/* 解析字符串数组 */
|
||
while (1) {
|
||
token_t item = parser_next_token(&p);
|
||
if (item.type == TOKEN_RBRACKET) break;
|
||
if (item.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&item);
|
||
if (v && config->num_plugins < COCOON_MAX_PLUGINS) {
|
||
config->plugins[config->num_plugins++] = v;
|
||
}
|
||
} else {
|
||
fprintf(stderr, "[Config] 第 %d 行: plugins 数组期望字符串项\n", item.line);
|
||
}
|
||
token_t sep = parser_next_token(&p);
|
||
if (sep.type == TOKEN_RBRACKET) break;
|
||
if (sep.type != TOKEN_COMMA) {
|
||
fprintf(stderr, "[Config] 第 %d 行: plugins 数组期望 ',' 或 ']'\n", sep.line);
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
fprintf(stderr, "[Config] 第 %d 行: plugins 期望字符串或数组\n", val.line);
|
||
}
|
||
} else if (strcmp(key_str, "proxies") == 0) {
|
||
if (val.type == TOKEN_LBRACKET) {
|
||
/* 解析对象数组 */
|
||
while (1) {
|
||
token_t item = parser_next_token(&p);
|
||
if (item.type == TOKEN_RBRACKET) break;
|
||
if (item.type == TOKEN_LBRACE) {
|
||
char prefix[256] = {0};
|
||
char target[256] = {0};
|
||
/* 解析对象内的键值对 */
|
||
while (1) {
|
||
token_t pkey = parser_next_token(&p);
|
||
if (pkey.type == TOKEN_RBRACE) break;
|
||
if (pkey.type != TOKEN_STRING) {
|
||
fprintf(stderr, "[Config] 第 %d 行: proxy 对象期望字符串键\n", pkey.line);
|
||
break;
|
||
}
|
||
if (!token_expect(&p, TOKEN_COLON)) break;
|
||
token_t pval = parser_next_token(&p);
|
||
char *pk = token_str_dup(&pkey);
|
||
if (strcmp(pk, "prefix") == 0 && pval.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&pval);
|
||
if (v) { strncpy(prefix, v, sizeof(prefix)-1); free(v); }
|
||
} else if (strcmp(pk, "target") == 0 && pval.type == TOKEN_STRING) {
|
||
char *v = token_str_dup(&pval);
|
||
if (v) { strncpy(target, v, sizeof(target)-1); free(v); }
|
||
}
|
||
free(pk);
|
||
token_t psep = parser_next_token(&p);
|
||
if (psep.type == TOKEN_RBRACE) break;
|
||
if (psep.type != TOKEN_COMMA) {
|
||
fprintf(stderr, "[Config] 第 %d 行: proxy 对象期望 ',' 或 '}'\n", psep.line);
|
||
break;
|
||
}
|
||
}
|
||
if (prefix[0] && target[0] && config->num_proxies < COCOON_MAX_PROXY_RULES) {
|
||
size_t prefix_len = strlen(prefix);
|
||
if (prefix_len >= sizeof(config->proxies[0].prefix)) prefix_len = sizeof(config->proxies[0].prefix) - 1;
|
||
memcpy(config->proxies[config->num_proxies].prefix, prefix, prefix_len);
|
||
config->proxies[config->num_proxies].prefix[prefix_len] = '\0';
|
||
size_t target_len = strlen(target);
|
||
if (target_len >= sizeof(config->proxies[0].target)) target_len = sizeof(config->proxies[0].target) - 1;
|
||
memcpy(config->proxies[config->num_proxies].target, target, target_len);
|
||
config->proxies[config->num_proxies].target[target_len] = '\0';
|
||
config->num_proxies++;
|
||
}
|
||
} else {
|
||
fprintf(stderr, "[Config] 第 %d 行: proxies 数组期望对象项\n", item.line);
|
||
}
|
||
token_t sep = parser_next_token(&p);
|
||
if (sep.type == TOKEN_RBRACKET) break;
|
||
if (sep.type != TOKEN_COMMA) {
|
||
fprintf(stderr, "[Config] 第 %d 行: proxies 数组期望 ',' 或 ']'\n", sep.line);
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
fprintf(stderr, "[Config] 第 %d 行: proxies 期望数组\n", val.line);
|
||
}
|
||
} /* 其他字段：忽略（未来扩展预留） */
|
||
|
||
free(key_str);
|
||
|
||
/* 检查逗号或右括号 */
|
||
token_t sep = parser_next_token(&p);
|
||
if (sep.type == TOKEN_RBRACE) break;
|
||
if (sep.type != TOKEN_COMMA) {
|
||
fprintf(stderr, "[Config] 第 %d 行: 期望 ',' 或 '}'\n", sep.line);
|
||
free(buf);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
free(buf);
|
||
return true;
|
||
}
|
||
|
||
void config_merge(cocoon_config_t *base, const cocoon_config_t *cmdline,
|
||
bool has_root_dir, bool has_port, bool has_workers,
|
||
bool has_max_conn, bool has_timeout, bool has_log_level,
|
||
bool has_gzip_enabled, bool has_brotli_enabled,
|
||
bool has_tls_cert, bool has_tls_key, bool has_tls_enabled,
|
||
bool has_access_log,
|
||
bool has_cors_enabled, bool has_auth_user, bool has_auth_pass,
|
||
bool has_rate_limit,
|
||
bool has_plugins) {
|
||
if (!base || !cmdline) return;
|
||
|
||
/* 命令行显式指定的值覆盖配置文件 */
|
||
if (has_root_dir && cmdline->root_dir) {
|
||
free((void *)base->root_dir);
|
||
base->root_dir = strdup(cmdline->root_dir);
|
||
}
|
||
if (has_port) base->port = cmdline->port;
|
||
if (has_workers) base->num_workers = cmdline->num_workers;
|
||
if (has_max_conn) base->max_connections = cmdline->max_connections;
|
||
if (has_timeout) base->timeout_ms = cmdline->timeout_ms;
|
||
if (has_log_level) base->log_level = cmdline->log_level;
|
||
if (has_gzip_enabled) base->gzip_enabled = cmdline->gzip_enabled;
|
||
if (has_brotli_enabled) base->brotli_enabled = cmdline->brotli_enabled;
|
||
if (has_tls_cert && cmdline->tls_cert) {
|
||
free((void *)base->tls_cert);
|
||
base->tls_cert = strdup(cmdline->tls_cert);
|
||
}
|
||
if (has_tls_key && cmdline->tls_key) {
|
||
free((void *)base->tls_key);
|
||
base->tls_key = strdup(cmdline->tls_key);
|
||
}
|
||
if (has_tls_enabled) base->tls_enabled = cmdline->tls_enabled;
|
||
if (has_access_log && cmdline->access_log_path) {
|
||
free((void *)base->access_log_path);
|
||
base->access_log_path = strdup(cmdline->access_log_path);
|
||
}
|
||
if (has_cors_enabled) base->cors_enabled = cmdline->cors_enabled;
|
||
if (has_auth_user && cmdline->auth_user) {
|
||
free((void *)base->auth_user);
|
||
base->auth_user = strdup(cmdline->auth_user);
|
||
}
|
||
if (has_auth_pass && cmdline->auth_pass) {
|
||
free((void *)base->auth_pass);
|
||
base->auth_pass = strdup(cmdline->auth_pass);
|
||
}
|
||
if (has_rate_limit) base->rate_limit = cmdline->rate_limit;
|
||
if (has_plugins) {
|
||
for (size_t i = 0; i < cmdline->num_plugins && i < COCOON_MAX_PLUGINS; i++) {
|
||
if (base->num_plugins < COCOON_MAX_PLUGINS) {
|
||
base->plugins[base->num_plugins++] = strdup(cmdline->plugins[i]);
|
||
}
|
||
}
|
||
}
|
||
/* threaded 是 flag 参数，命令行指定了就用命令行的 */
|
||
if (cmdline->threaded) base->threaded = true;
|
||
}
|