hydra/src/config.c

/*
 *  Boa, an http server
 *  Copyright (C) 1999 Larry Doolittle <ldoolitt@boa.org>
 *
 *  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 1, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

/* $Id: config.c,v 1.31.2.3 2002/07/26 03:04:29 jnelson Exp $*/

#include "boa.h"
#include "y.tab.h"
#include "parse.h"

int yyparse(void);              /* Better match the output of lex */

#ifdef DEBUG
#define DBG(x) x
#else
#define DBG(x)
#endif

int server_port;
uid_t server_uid;
gid_t server_gid;
char *server_root;
char *server_name;
char *server_admin;
char *server_ip;
int virtualhost;
long int max_connections;

int server_max_threads = 1;

char *server_cert;
char *server_key;
int ssl_session_cache;
int boa_ssl = 0;
int ssl_port = 443;
int ssl_dh_bits = 1024; /* default value */
int ssl_session_timeout = 3600;
int ssl_params_refresh = 432000; /* every 5 days */

char *ssl_ciphers = NULL;
char *ssl_mac = NULL;
char *ssl_kx = NULL;
char *ssl_comp = NULL;
char *ssl_protocol = NULL;

char *document_root;
char *user_dir;
char *directory_index;
char *default_type;
char *dirmaker;
char *cachedir;

char *tempdir;

char *cgi_path = NULL;
int single_post_limit = SINGLE_POST_LIMIT_DEFAULT;

int ka_timeout;
int ka_max;

/* These came from log.c */
char *error_log_name;
char *access_log_name;
char *cgi_log_name;

int use_localtime;

/* These are new */
static void c_set_user(char *v1, char *v2, void *t);
static void c_set_group(char *v1, char *v2, void *t);
static void c_set_string(char *v1, char *v2, void *t);
static void c_set_int(char *v1, char *v2, void *t);
static void c_set_unity(char *v1, char *v2, void *t);
static void c_add_type(char *v1, char *v2, void *t);
static void c_add_alias(char *v1, char *v2, void *t);

/* Fakery to keep the value passed to action() a void *,
   see usage in table and c_add_alias() below */
static int script_number = SCRIPTALIAS;
static int redirect_number = REDIRECT;
static int alias_number = ALIAS;
static uid_t current_uid=0;

/* Help keep the table below compact */
#define S0A STMT_NO_ARGS
#define S1A STMT_ONE_ARG
#define S2A STMT_TWO_ARGS

struct ccommand clist[] = {
    {"SSLCiphers", S1A, c_set_string, &ssl_ciphers},
    {"SSLKeyExchangeAlgorithms", S1A, c_set_string, &ssl_kx},
    {"SSLMACAlgorithms", S1A, c_set_string, &ssl_mac},
    {"SSLProtocols", S1A, c_set_string, &ssl_protocol},
    {"SSLCompressionMethods", S1A, c_set_string, &ssl_comp},
    {"SSLCertificate", S1A, c_set_string, &server_cert},
    {"SSLKey", S1A, c_set_string, &server_key},
    {"SSLSessionCache", S1A, c_set_int, &ssl_session_cache},
    {"SSL", S1A, c_set_int, &boa_ssl},
    {"SSLPort", S1A, c_set_int, &ssl_port},
    {"SSLDHBits", S1A, c_set_int, &ssl_dh_bits},
    {"SSLSessionTimeout", S1A, c_set_int, &ssl_session_timeout},
    {"SSLParamsRefresh", S1A, c_set_int, &ssl_params_refresh},
    {"Threads", S1A, c_set_int, &server_max_threads},
    {"Port", S1A, c_set_int, &server_port},
    {"Listen", S1A, c_set_string, &server_ip},
    {"BackLog", S1A, c_set_int, &backlog},
    {"User", S1A, c_set_user, NULL},
    {"Group", S1A, c_set_group, NULL},
    {"ServerAdmin", S1A, c_set_string, &server_admin},
    {"ServerRoot", S1A, c_set_string, &server_root},
    {"ErrorLog", S1A, c_set_string, &error_log_name},
    {"AccessLog", S1A, c_set_string, &access_log_name},
    {"UseLocaltime", S0A, c_set_unity, &use_localtime},
    {"CgiLog", S1A, c_set_string, &cgi_log_name},
    {"VerboseCGILogs", S0A, c_set_unity, &verbose_cgi_logs},
    {"ServerName", S1A, c_set_string, &server_name},
    {"VirtualHost", S0A, c_set_unity, &virtualhost},
    {"DocumentRoot", S1A, c_set_string, &document_root},
    {"UserDir", S1A, c_set_string, &user_dir},
    {"DirectoryIndex", S1A, c_set_string, &directory_index},
    {"DirectoryMaker", S1A, c_set_string, &dirmaker},
    {"DirectoryCache", S1A, c_set_string, &cachedir},
    {"KeepAliveMax", S1A, c_set_int, &ka_max},
    {"KeepAliveTimeout", S1A, c_set_int, &ka_timeout},
    {"MimeTypes", S1A, c_set_string, &mime_types},
    {"DefaultType", S1A, c_set_string, &default_type},
    {"AddType", S2A, c_add_type, NULL},
    {"ScriptAlias", S2A, c_add_alias, &script_number},
    {"Redirect", S2A, c_add_alias, &redirect_number},
    {"Alias", S2A, c_add_alias, &alias_number},
    {"SinglePostLimit", S1A, c_set_int, &single_post_limit},
    {"CGIPath", S1A, c_set_string, &cgi_path},
    {"MaxConnections", S1A, c_set_int, &max_connections},
};

static void c_set_user(char *v1, char *v2, void *t)
{
    struct passwd *passwdbuf;
    char *endptr;
    int i;

    DBG(printf("User %s = ", v1);
        )
        i = strtol(v1, &endptr, 0);
    if (*v1 != '\0' && *endptr == '\0') {
        server_uid = i;
    } else {
        passwdbuf = getpwnam(v1);
        if (!passwdbuf) {
            if (current_uid)
                return;
            fprintf(stderr, "No such user: %s\n", v1);
            exit(1);
        }
        server_uid = passwdbuf->pw_uid;
    }
    DBG(printf("%d\n", server_uid);
        )
}

static void c_set_group(char *v1, char *v2, void *t)
{
    struct group *groupbuf;
    char *endptr;
    int i;
    DBG(printf("Group %s = ", v1);
        )
        i = strtol(v1, &endptr, 0);
    if (*v1 != '\0' && *endptr == '\0') {
        server_gid = i;
    } else {
        groupbuf = getgrnam(v1);
        if (!groupbuf) {
            if (current_uid)
                return;
            fprintf(stderr, "No such group: %s\n", v1);
            exit(1);
        }
        server_gid = groupbuf->gr_gid;
    }
    DBG(printf("%d\n", server_gid);
        )
}

static void c_set_string(char *v1, char *v2, void *t)
{
    char *s;
    DBG(printf("Setting pointer %p to string %s ..", t, v1);
        )
        if (t) {
        s = *(char **) t;
        if (s)
            free(s);
        *(char **) t = strdup(v1);
        if (!*(char **) t) {
            DIE("Unable to strdup in c_set_string");
        }
        DBG(printf("done.\n");
            )
    } else {
        DBG(printf("skipped.\n");
            )
    }
}

static void c_set_int(char *v1, char *v2, void *t)
{
    char *endptr;
    int i;
    DBG(printf("Setting pointer %p to integer string %s ..", t, v1);
        )
        if (t) {
        i = strtol(v1, &endptr, 0); /* Automatic base 10/16/8 switching */
        if (*v1 != '\0' && *endptr == '\0') {
            *(int *) t = i;
            DBG(printf(" Integer converted as %d, done\n", i);
                )
        } else {
            /* XXX should tell line number to user */
            fprintf(stderr, "Error: %s found where integer expected\n",
                    v1);
        }
    } else {
        DBG(printf("skipped.\n");
            )
    }
}

static void c_set_unity(char *v1, char *v2, void *t)
{
    DBG(printf("Setting pointer %p to unity\n", t);
        )
        if (t)
        *(int *) t = 1;
}

static void c_add_type(char *v1, char *v2, void *t)
{
    add_mime_type(v1, v2);
}

static void c_add_alias(char *v1, char *v2, void *t)
{
    add_alias(v2, v1, *(int *) t);
}

struct ccommand *lookup_keyword(char *c)
{
    struct ccommand *p;
    DBG(printf("Checking string '%s' against keyword list\n", c);
        )
        for (p = clist;
             p < clist + (sizeof (clist) / sizeof (struct ccommand)); p++) {
        if (strcmp(c, p->name) == 0)
            return p;
    }
    return NULL;
}

/*
 * Name: read_config_files
 *
 * Description: Reads config files via yyparse, then makes sure that
 * all required variables were set properly.
 */
void read_config_files(void)
{
    char *temp;
    current_uid = getuid();
    yyin = fopen("boa.conf", "r");

    if (!yyin) {
        fputs("Could not open boa.conf for reading.\n", stderr);
        exit(1);
    }
    if (yyparse()) {
        fputs("Error parsing config files, exiting\n", stderr);
        exit(1);
    }

    if (!server_name) {
        struct hostent *he;
        char temp_name[100];

        if (gethostname(temp_name, 100) == -1) {
            perror("gethostname:");
            exit(1);
        }

        he = gethostbyname(temp_name);
        if (he == NULL) {
            perror("gethostbyname:");
            exit(1);
        }

        server_name = strdup(he->h_name);
        if (server_name == NULL) {
            perror("strdup:");
            exit(1);
        }
    }
    tempdir = getenv("TMP");
    if (tempdir == NULL)
        tempdir = "/tmp";

    if (single_post_limit < 0) {
        fprintf(stderr, "Invalid value for single_post_limit: %d\n",
                single_post_limit);
        exit(1);
    }

    if (document_root) {
        temp = normalize_path(document_root);
        free(document_root);
        document_root = temp;
    }

    if (error_log_name) {
        temp = normalize_path(error_log_name);
        free(error_log_name);
        error_log_name = temp;
    }

    if (access_log_name) {
        temp = normalize_path(access_log_name);
        free(access_log_name);
        access_log_name = temp;
    }

    if (cgi_log_name) {
        temp = normalize_path(cgi_log_name);
        free(cgi_log_name);
        cgi_log_name = temp;
    }

    if (dirmaker) {
        temp = normalize_path(dirmaker);
        free(dirmaker);
        dirmaker = temp;
    }

#if 0
    if (mime_types) {
        temp = normalize_path(mime_types);
        free(mime_types);
        mime_types = temp;
    }
#endif
}
1	nmav	1.1	/*
2			* Boa, an http server
3			* Copyright (C) 1999 Larry Doolittle <ldoolitt@boa.org>
4			*
5			* This program is free software; you can redistribute it and/or modify
6			* it under the terms of the GNU General Public License as published by
7			* the Free Software Foundation; either version 1, or (at your option)
8			* any later version.
9			*
10			* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14			*
15			* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18			*
19			*/
20
21			/* $Id: config.c,v 1.31.2.3 2002/07/26 03:04:29 jnelson Exp $*/
22
23			#include "boa.h"
24			#include "y.tab.h"
25			#include "parse.h"
26
27			int yyparse(void); /* Better match the output of lex */
28
29			#ifdef DEBUG
30			#define DBG(x) x
31			#else
32			#define DBG(x)
33			#endif
34
35			int server_port;
36			uid_t server_uid;
37			gid_t server_gid;
38			char *server_root;
39			char *server_name;
40			char *server_admin;
41			char *server_ip;
42			int virtualhost;
43			long int max_connections;
44
45			int server_max_threads = 1;
46
47			char *server_cert;
48			char *server_key;
49			int ssl_session_cache;
50			int boa_ssl = 0;
51			int ssl_port = 443;
52			int ssl_dh_bits = 1024; /* default value */
53			int ssl_session_timeout = 3600;
54			int ssl_params_refresh = 432000; /* every 5 days */
55
56			char *ssl_ciphers = NULL;
57			char *ssl_mac = NULL;
58			char *ssl_kx = NULL;
59			char *ssl_comp = NULL;
60			char *ssl_protocol = NULL;
61
62			char *document_root;
63			char *user_dir;
64			char *directory_index;
65			char *default_type;
66			char *dirmaker;
67			char *cachedir;
68
69			char *tempdir;
70
71			char *cgi_path = NULL;
72			int single_post_limit = SINGLE_POST_LIMIT_DEFAULT;
73
74			int ka_timeout;
75			int ka_max;
76
77			/* These came from log.c */
78			char *error_log_name;
79			char *access_log_name;
80			char *cgi_log_name;
81
82			int use_localtime;
83
84			/* These are new */
85			static void c_set_user(char v1, char v2, void *t);
86			static void c_set_group(char v1, char v2, void *t);
87			static void c_set_string(char v1, char v2, void *t);
88			static void c_set_int(char v1, char v2, void *t);
89			static void c_set_unity(char v1, char v2, void *t);
90			static void c_add_type(char v1, char v2, void *t);
91			static void c_add_alias(char v1, char v2, void *t);
92
93			/* Fakery to keep the value passed to action() a void *,
94			see usage in table and c_add_alias() below */
95			static int script_number = SCRIPTALIAS;
96			static int redirect_number = REDIRECT;
97			static int alias_number = ALIAS;
98			static uid_t current_uid=0;
99
100			/* Help keep the table below compact */
101			#define S0A STMT_NO_ARGS
102			#define S1A STMT_ONE_ARG
103			#define S2A STMT_TWO_ARGS
104
105			struct ccommand clist[] = {
106			{"SSLCiphers", S1A, c_set_string, &ssl_ciphers},
107			{"SSLKeyExchangeAlgorithms", S1A, c_set_string, &ssl_kx},
108			{"SSLMACAlgorithms", S1A, c_set_string, &ssl_mac},
109			{"SSLProtocols", S1A, c_set_string, &ssl_protocol},
110			{"SSLCompressionMethods", S1A, c_set_string, &ssl_comp},
111			{"SSLCertificate", S1A, c_set_string, &server_cert},
112			{"SSLKey", S1A, c_set_string, &server_key},
113			{"SSLSessionCache", S1A, c_set_int, &ssl_session_cache},
114			{"SSL", S1A, c_set_int, &boa_ssl},
115			{"SSLPort", S1A, c_set_int, &ssl_port},
116			{"SSLDHBits", S1A, c_set_int, &ssl_dh_bits},
117			{"SSLSessionTimeout", S1A, c_set_int, &ssl_session_timeout},
118			{"SSLParamsRefresh", S1A, c_set_int, &ssl_params_refresh},
119			{"Threads", S1A, c_set_int, &server_max_threads},
120			{"Port", S1A, c_set_int, &server_port},
121			{"Listen", S1A, c_set_string, &server_ip},
122			{"BackLog", S1A, c_set_int, &backlog},
123			{"User", S1A, c_set_user, NULL},
124			{"Group", S1A, c_set_group, NULL},
125			{"ServerAdmin", S1A, c_set_string, &server_admin},
126			{"ServerRoot", S1A, c_set_string, &server_root},
127			{"ErrorLog", S1A, c_set_string, &error_log_name},
128			{"AccessLog", S1A, c_set_string, &access_log_name},
129			{"UseLocaltime", S0A, c_set_unity, &use_localtime},
130			{"CgiLog", S1A, c_set_string, &cgi_log_name},
131			{"VerboseCGILogs", S0A, c_set_unity, &verbose_cgi_logs},
132			{"ServerName", S1A, c_set_string, &server_name},
133			{"VirtualHost", S0A, c_set_unity, &virtualhost},
134			{"DocumentRoot", S1A, c_set_string, &document_root},
135			{"UserDir", S1A, c_set_string, &user_dir},
136			{"DirectoryIndex", S1A, c_set_string, &directory_index},
137			{"DirectoryMaker", S1A, c_set_string, &dirmaker},
138			{"DirectoryCache", S1A, c_set_string, &cachedir},
139			{"KeepAliveMax", S1A, c_set_int, &ka_max},
140			{"KeepAliveTimeout", S1A, c_set_int, &ka_timeout},
141			{"MimeTypes", S1A, c_set_string, &mime_types},
142			{"DefaultType", S1A, c_set_string, &default_type},
143			{"AddType", S2A, c_add_type, NULL},
144			{"ScriptAlias", S2A, c_add_alias, &script_number},
145			{"Redirect", S2A, c_add_alias, &redirect_number},
146			{"Alias", S2A, c_add_alias, &alias_number},
147			{"SinglePostLimit", S1A, c_set_int, &single_post_limit},
148			{"CGIPath", S1A, c_set_string, &cgi_path},
149			{"MaxConnections", S1A, c_set_int, &max_connections},
150			};
151
152			static void c_set_user(char v1, char v2, void *t)
153			{
154			struct passwd *passwdbuf;
155			char *endptr;
156			int i;
157
158			DBG(printf("User %s = ", v1);
159			)
160			i = strtol(v1, &endptr, 0);
161			if (v1 != '\0' && endptr == '\0') {
162			server_uid = i;
163			} else {
164			passwdbuf = getpwnam(v1);
165			if (!passwdbuf) {
166			if (current_uid)
167			return;
168			fprintf(stderr, "No such user: %s\n", v1);
169			exit(1);
170			}
171			server_uid = passwdbuf->pw_uid;
172			}
173			DBG(printf("%d\n", server_uid);
174			)
175			}
176
177			static void c_set_group(char v1, char v2, void *t)
178			{
179			struct group *groupbuf;
180			char *endptr;
181			int i;
182			DBG(printf("Group %s = ", v1);
183			)
184			i = strtol(v1, &endptr, 0);
185			if (v1 != '\0' && endptr == '\0') {
186			server_gid = i;
187			} else {
188			groupbuf = getgrnam(v1);
189			if (!groupbuf) {
190			if (current_uid)
191			return;
192			fprintf(stderr, "No such group: %s\n", v1);
193			exit(1);
194			}
195			server_gid = groupbuf->gr_gid;
196			}
197			DBG(printf("%d\n", server_gid);
198			)
199			}
200
201			static void c_set_string(char v1, char v2, void *t)
202			{
203			char *s;
204			DBG(printf("Setting pointer %p to string %s ..", t, v1);
205			)
206			if (t) {
207			s = (char *) t;
208			if (s)
209			free(s);
210			(char *) t = strdup(v1);
211			if (!(char *) t) {
212			DIE("Unable to strdup in c_set_string");
213			}
214			DBG(printf("done.\n");
215			)
216			} else {
217			DBG(printf("skipped.\n");
218			)
219			}
220			}
221
222			static void c_set_int(char v1, char v2, void *t)
223			{
224			char *endptr;
225			int i;
226			DBG(printf("Setting pointer %p to integer string %s ..", t, v1);
227			)
228			if (t) {
229			i = strtol(v1, &endptr, 0); /* Automatic base 10/16/8 switching */
230			if (v1 != '\0' && endptr == '\0') {
231			(int ) t = i;
232			DBG(printf(" Integer converted as %d, done\n", i);
233			)
234			} else {
235			/* XXX should tell line number to user */
236			fprintf(stderr, "Error: %s found where integer expected\n",
237			v1);
238			}
239			} else {
240			DBG(printf("skipped.\n");
241			)
242			}
243			}
244
245			static void c_set_unity(char v1, char v2, void *t)
246			{
247			DBG(printf("Setting pointer %p to unity\n", t);
248			)
249			if (t)
250			(int ) t = 1;
251			}
252
253			static void c_add_type(char v1, char v2, void *t)
254			{
255			add_mime_type(v1, v2);
256			}
257
258			static void c_add_alias(char v1, char v2, void *t)
259			{
260			add_alias(v2, v1, (int ) t);
261			}
262
263			struct ccommand lookup_keyword(char c)
264			{
265			struct ccommand *p;
266			DBG(printf("Checking string '%s' against keyword list\n", c);
267			)
268			for (p = clist;
269			p < clist + (sizeof (clist) / sizeof (struct ccommand)); p++) {
270			if (strcmp(c, p->name) == 0)
271			return p;
272			}
273			return NULL;
274			}
275
276			/*
277			* Name: read_config_files
278			*
279			* Description: Reads config files via yyparse, then makes sure that
280			* all required variables were set properly.
281			*/
282			void read_config_files(void)
283			{
284			char *temp;
285			current_uid = getuid();
286			yyin = fopen("boa.conf", "r");
287
288			if (!yyin) {
289			fputs("Could not open boa.conf for reading.\n", stderr);
290			exit(1);
291			}
292			if (yyparse()) {
293			fputs("Error parsing config files, exiting\n", stderr);
294			exit(1);
295			}
296
297			if (!server_name) {
298			struct hostent *he;
299			char temp_name[100];
300
301			if (gethostname(temp_name, 100) == -1) {
302			perror("gethostname:");
303			exit(1);
304			}
305
306			he = gethostbyname(temp_name);
307			if (he == NULL) {
308			perror("gethostbyname:");
309			exit(1);
310			}
311
312			server_name = strdup(he->h_name);
313			if (server_name == NULL) {
314			perror("strdup:");
315			exit(1);
316			}
317			}
318			tempdir = getenv("TMP");
319			if (tempdir == NULL)
320			tempdir = "/tmp";
321
322			if (single_post_limit < 0) {
323			fprintf(stderr, "Invalid value for single_post_limit: %d\n",
324			single_post_limit);
325			exit(1);
326			}
327
328			if (document_root) {
329			temp = normalize_path(document_root);
330			free(document_root);
331			document_root = temp;
332			}
333
334			if (error_log_name) {
335			temp = normalize_path(error_log_name);
336			free(error_log_name);
337			error_log_name = temp;
338			}
339
340			if (access_log_name) {
341			temp = normalize_path(access_log_name);
342			free(access_log_name);
343			access_log_name = temp;
344			}
345
346			if (cgi_log_name) {
347			temp = normalize_path(cgi_log_name);
348			free(cgi_log_name);
349			cgi_log_name = temp;
350			}
351
352			if (dirmaker) {
353			temp = normalize_path(dirmaker);
354			free(dirmaker);
355			dirmaker = temp;
356			}
357
358			#if 0
359			if (mime_types) {
360			temp = normalize_path(mime_types);
361			free(mime_types);
362			mime_types = temp;
363			}
364			#endif
365			}