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4 nishi 1 
/* $Id: config.c 17 2024-09-13 17:41:07Z nishi $ */
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16 nishi 3 
#define SOURCE
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4 nishi 5 
#include "tw_config.h"
17 nishi 6 
#include "tw_module.h"
4 nishi 7 
 
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#include <stdio.h>
7 nishi 9 
#include <stdint.h>
4 nishi 10 
#include <stdlib.h>
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#include <string.h>
12 nishi 12 
#include <unistd.h>
4 nishi 13 
 
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#include <cm_string.h>
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#include <cm_log.h>
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6 nishi 17 
struct tw_config config;
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12 nishi 19 
struct tw_config_entry* tw_vhost_match(const char* name, int port) {
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	int i;
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	for(i = 0; i < config.vhost_count; i++) {
13 nishi 22 
		if(strcmp(config.vhosts[i].name, name) == 0 && (config.vhosts[i].port == -1 ? 1 : config.vhosts[i].port == port)) {
12 nishi 23 
			return &config.vhosts[i];
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		}
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	}
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	return &config.root;
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}
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7 nishi 29 
void tw_config_init(void) {
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	int i;
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	for(i = 0; i < MAX_PORTS + 1; i++) {
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		config.ports[i] = -1;
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	}
12 nishi 34 
	for(i = 0; i < MAX_VHOSTS; i++) {
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		config.vhosts[i].sslkey = NULL;
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		config.vhosts[i].sslcert = NULL;
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	}
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	config.root.sslkey = NULL;
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	config.root.sslcert = NULL;
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	config.vhost_count = 0;
17 nishi 41 
	config.server_root = cm_strdup(PREFIX);
12 nishi 42 
	gethostname(config.hostname, 1024);
7 nishi 43 
}
6 nishi 44 
 
45 
int tw_config_read(const char* path) {
4 nishi 46 
	cm_log("Config", "Reading %s", path);
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	char cbuf[2];
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	cbuf[1] = 0;
6 nishi 49 
	int ln = 0;
4 nishi 50 
	FILE* f = fopen(path, "r");
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	if(f != NULL) {
4 nishi 52 
		char* line = malloc(1);
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		line[0] = 0;
6 nishi 54 
		int stop = 0;
12 nishi 55 
		struct tw_config_entry* current = &config.root;
6 nishi 56 
		char* vhost = NULL;
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		while(stop == 0) {
4 nishi 58 
			int c = fread(cbuf, 1, 1, f);
6 nishi 59 
			if(cbuf[0] == '\n' || c <= 0) {
60 
				ln++;
4 nishi 61 
				char* l = cm_trim(line);
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				if(strlen(l) > 0 && l[0] != '#') {
5 nishi 63 
					char** r = cm_split(l, " \t");
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					int i;
6 nishi 65 
					if(cm_strcaseequ(r[0], "Include") || cm_strcaseequ(r[0], "IncludeOptional")) {
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						for(i = 1; r[i] != NULL; i++) {
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							if(tw_config_read(r[i]) != 0 && cm_strcaseequ(r[0], "Include")) {
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								stop = 1;
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								break;
5 nishi 70 
							}
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						}
6 nishi 72 
					} else if(cm_strcaseequ(r[0], "BeginVirtualHost")) {
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						if(vhost != NULL) {
12 nishi 74 
							cm_log("Config", "Already in virtual host section at line %d", ln);
6 nishi 75 
							stop = 1;
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						} else {
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							if(r[1] == NULL) {
12 nishi 78 
								cm_log("Config", "Missing virtual host at line %d", ln);
6 nishi 79 
								stop = 1;
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							} else {
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								vhost = cm_strdup(r[1]);
12 nishi 82 
								current = &config.vhosts[config.vhost_count++];
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								int i;
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								current->name = cm_strdup(vhost);
13 nishi 85 
								current->port = -1;
12 nishi 86 
								for(i = 0; vhost[i] != 0; i++) {
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									if(vhost[i] == ':') {
88 
										current->name[i] = 0;
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										current->port = atoi(current->name + i + 1);
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										break;
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									}
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								}
6 nishi 93 
							}
94 
						}
95 
					} else if(cm_strcaseequ(r[0], "EndVirtualHost")) {
96 
						if(vhost == NULL) {
12 nishi 97 
							cm_log("Config", "Not in virtual host section at line %d", ln);
6 nishi 98 
							stop = 1;
99 
						} else {
100 
							free(vhost);
101 
							vhost = NULL;
12 nishi 102 
							current = &config.root;
6 nishi 103 
						}
7 nishi 104 
					} else if(cm_strcaseequ(r[0], "Listen") || cm_strcaseequ(r[0], "ListenSSL")) {
105 
						for(i = 1; r[i] != NULL; i++) {
106 
							uint64_t port = atoi(r[i]);
107 
							cm_log("Config", "Going to listen at port %d%s", (int)port, cm_strcaseequ(r[0], "ListenSSL") ? " with SSL" : "");
108 
							if(cm_strcaseequ(r[0], "ListenSSL")) port |= (1ULL << 32);
109 
							int j;
110 
							for(j = 0; config.ports[j] != -1; j++)
111 
								;
112 
							config.ports[j] = port;
113 
						}
12 nishi 114 
					} else if(cm_strcaseequ(r[0], "SSLKey")) {
115 
						if(r[1] == NULL) {
116 
							cm_log("Config", "Missing path at line %d", ln);
117 
							stop = 1;
118 
						} else {
119 
							if(current->sslkey != NULL) free(current->sslkey);
120 
							current->sslkey = cm_strdup(r[1]);
121 
						}
122 
					} else if(cm_strcaseequ(r[0], "SSLCertificate")) {
123 
						if(r[1] == NULL) {
124 
							cm_log("Config", "Missing path at line %d", ln);
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							stop = 1;
126 
						} else {
127 
							if(current->sslcert != NULL) free(current->sslcert);
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							current->sslcert = cm_strdup(r[1]);
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						}
17 nishi 130 
					} else if(cm_strcaseequ(r[0], "ServerRoot")) {
131 
						if(r[1] == NULL) {
132 
							cm_log("Config", "Missing path at line %d", ln);
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							stop = 1;
134 
						} else {
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							if(config.server_root != NULL) free(config.server_root);
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							config.server_root = cm_strdup(r[1]);
137 
						}
138 
					} else if(cm_strcaseequ(r[0], "LoadModule")) {
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						for(i = 1; r[i] != NULL; i++) {
140 
							void* mod = tw_module_load(r[i]);
141 
							if(mod != NULL) {
142 
								if(tw_module_init(mod) != 0) {
143 
									stop = 1;
144 
									break;
145 
								}
146 
							} else {
147 
								stop = 1;
148 
								break;
149 
							}
150 
						}
6 nishi 151 
					} else {
152 
						if(r[0] != NULL) {
153 
							cm_log("Config", "Unknown directive `%s' at line %d", r[0], ln);
154 
						}
155 
						stop = 1;
5 nishi 156 
					}
157 
					for(i = 0; r[i] != NULL; i++) free(r[i]);
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					free(r);
4 nishi 159 
				}
160 
				free(l);
161 
				free(line);
162 
				line = malloc(1);
163 
				line[0] = 0;
164 
				if(c <= 0) break;
6 nishi 165 
			} else if(cbuf[0] != '\r') {
4 nishi 166 
				char* tmp = line;
167 
				line = cm_strcat(tmp, cbuf);
168 
				free(tmp);
169 
			}
170 
		}
171 
		free(line);
172 
		fclose(f);
6 nishi 173 
		return stop;
174 
	} else {
5 nishi 175 
		cm_log("Config", "Could not open the file");
4 nishi 176 
		return 1;
177 
	}
178 
}