+++ /dev/null
-/*
- * Copyright (c) 2004-2005 Sergey Lyubka <valenok@gmail.com>
- * All rights reserved
- *
- * "THE BEER-WARE LICENSE" (Revision 42):
- * Sergey Lyubka wrote this file. As long as you retain this notice you
- * can do whatever you want with this stuff. If we meet some day, and you think
- * this stuff is worth it, you can buy me a beer in return.
- */
-
-#include "defs.h"
-
-static int isbyte(int n) { return (n >= 0 && n <= 255); }
-
-static void
-set_acl(struct shttpd_ctx *ctx, const char *s)
-{
- struct acl *acl = NULL;
- char flag;
- int len, a, b, c, d, n, mask;
- struct llhead *lp, *tmp;
-
- /* Delete the old ACLs if any */
- LL_FOREACH_SAFE(&ctx->acl, lp, tmp)
- free(LL_ENTRY(lp, struct acl, link));
-
- FOR_EACH_WORD_IN_LIST(s, len) {
-
- mask = 32;
-
- if (sscanf(s, "%c%d.%d.%d.%d%n",&flag,&a,&b,&c,&d,&n) != 5) {
- elog(E_FATAL, NULL, "[%s]: subnet must be "
- "[+|-]x.x.x.x[/x]", s);
- } else if (flag != '+' && flag != '-') {
- elog(E_FATAL, NULL, "flag must be + or -: [%s]", s);
- } else if (!isbyte(a)||!isbyte(b)||!isbyte(c)||!isbyte(d)) {
- elog(E_FATAL, NULL, "bad ip address: [%s]", s);
- } else if ((acl = malloc(sizeof(*acl))) == NULL) {
- elog(E_FATAL, NULL, "%s", "cannot malloc subnet");
- } else if (sscanf(s + n, "/%d", &mask) == 0) {
- /* Do nothing, no mask specified */
- } else if (mask < 0 || mask > 32) {
- elog(E_FATAL, NULL, "bad subnet mask: %d [%s]", n, s);
- }
-
- acl->ip = (a << 24) | (b << 16) | (c << 8) | d;
- acl->mask = mask ? 0xffffffffU << (32 - mask) : 0;
- acl->flag = flag;
- LL_TAIL(&ctx->acl, &acl->link);
- }
-}
-
-#ifndef NO_SSL
-/*
- * Dynamically load SSL library. Set up ctx->ssl_ctx pointer.
- */
-static void
-set_ssl(struct shttpd_ctx *ctx, const char *pem)
-{
- SSL_CTX *CTX;
- void *lib;
- struct ssl_func *fp;
-
- /* Load SSL library dynamically */
- if ((lib = dlopen(SSL_LIB, RTLD_LAZY)) == NULL)
- elog(E_FATAL, NULL, "set_ssl: cannot load %s", SSL_LIB);
-
- for (fp = ssl_sw; fp->name != NULL; fp++)
- if ((fp->ptr.v_void = dlsym(lib, fp->name)) == NULL)
- elog(E_FATAL, NULL,"set_ssl: cannot find %s", fp->name);
-
- /* Initialize SSL crap */
- SSL_library_init();
-
- if ((CTX = SSL_CTX_new(SSLv23_server_method())) == NULL)
- elog(E_FATAL, NULL, "SSL_CTX_new error");
- else if (SSL_CTX_use_certificate_file(CTX, pem, SSL_FILETYPE_PEM) == 0)
- elog(E_FATAL, NULL, "cannot open %s", pem);
- else if (SSL_CTX_use_PrivateKey_file(CTX, pem, SSL_FILETYPE_PEM) == 0)
- elog(E_FATAL, NULL, "cannot open %s", pem);
- ctx->ssl_ctx = CTX;
-}
-#endif /* NO_SSL */
-
-static void
-open_log_file(FILE **fpp, const char *path)
-{
- if (*fpp != NULL)
- (void) fclose(*fpp);
-
- if (path == NULL) {
- *fpp = NULL;
- } else if ((*fpp = fopen(path, "a")) == NULL) {
- elog(E_FATAL, NULL, "cannot open log file %s: %s",
- path, strerror(errno));
- }
-}
-
-static void
-set_alog(struct shttpd_ctx *ctx, const char *path)
-{
- open_log_file(&ctx->access_log, path);
-}
-
-static void
-set_elog(struct shttpd_ctx *ctx, const char *path)
-{
- open_log_file(&ctx->error_log, path);
-}
-
-static void show_cfg_page(struct shttpd_arg *arg);
-
-static void
-set_cfg_uri(struct shttpd_ctx *ctx, const char *uri)
-{
- free_list(&ctx->registered_uris, ®istered_uri_destructor);
-
- if (uri != NULL) {
- shttpd_register_uri(ctx, uri, &show_cfg_page, ctx);
- }
-}
-
-static void
-set_ports(struct shttpd_ctx *ctx, const char *p)
-{
- int len, is_ssl;
-
- free_list(&ctx->listeners, &listener_destructor);
-
- FOR_EACH_WORD_IN_LIST(p, len) {
- is_ssl = p[len - 1] == 's' ? 1 : 0;
- if (shttpd_listen(ctx, atoi(p), is_ssl) == -1)
- elog(E_FATAL, NULL,
- "Cannot open socket on port %d", atoi(p));
- }
-}
-
-static const struct opt {
- int index; /* Index in shttpd_ctx */
- const char *name; /* Option name in config file */
- const char *description; /* Description */
- const char *default_value; /* Default option value */
- void (*setter)(struct shttpd_ctx *, const char *);
-} known_options[] = {
- {OPT_ROOT, "root", "\tWeb root directory", ".", NULL},
- {OPT_INDEX_FILES, "index_files", "Index files", INDEX_FILES, NULL},
- {OPT_PORTS, "ports", "Listening ports", LISTENING_PORTS, set_ports},
- {OPT_DIR_LIST, "dir_list", "Directory listing", "1", NULL},
- {OPT_CFG_URI, "cfg_uri", "Config uri", NULL, set_cfg_uri},
- {OPT_PROTECT, "protect", "URI to htpasswd mapping", NULL, NULL},
-#ifndef NO_CGI
- {OPT_CGI_EXTENSIONS, "cgi_ext", "CGI extensions", CGI_EXT, NULL},
- {OPT_CGI_INTERPRETER, "cgi_interp", "CGI interpreter", NULL, NULL},
- {OPT_CGI_ENVIRONMENT, "cgi_env", "Additional CGI env vars", NULL, NULL},
-#endif /* NO_CGI */
- {OPT_SSI_EXTENSIONS, "ssi_ext", "SSI extensions", SSI_EXT, NULL},
-#ifndef NO_AUTH
- {OPT_AUTH_REALM, "auth_realm", "Authentication domain name",REALM,NULL},
- {OPT_AUTH_GPASSWD, "auth_gpass", "Global passwords file", NULL, NULL},
- {OPT_AUTH_PUT, "auth_PUT", "PUT,DELETE auth file", NULL, NULL},
-#endif /* !NO_AUTH */
- {OPT_ACCESS_LOG, "access_log", "Access log file", NULL, set_alog},
- {OPT_ERROR_LOG, "error_log", "Error log file", NULL, set_elog},
- {OPT_MIME_TYPES, "mime_types", "Additional mime types list", NULL,NULL},
-#ifndef NO_SSL
- {OPT_SSL_CERTIFICATE, "ssl_cert", "SSL certificate file", NULL,set_ssl},
-#endif /* NO_SSL */
- {OPT_ALIASES, "aliases", "Path=URI mappings", NULL, NULL},
- {OPT_ACL, "acl", "\tAllow/deny IP addresses/subnets", NULL, set_acl},
-#ifdef _WIN32
-#else
- {OPT_INETD, "inetd", "Inetd mode", "0", NULL},
- {OPT_UID, "uid", "\tRun as user", NULL, NULL},
-#endif /* _WIN32 */
- {-1, NULL, NULL, NULL, NULL}
-};
-
-void shttpd_set_option(struct shttpd_ctx *ctx, const char *opt, const char *val)
-{
- const struct opt *o;
-
- for (o = known_options; o->name != NULL; o++)
- if (!strcmp(opt, o->name))
- break;
-
- if (o->name == NULL)
- elog(E_FATAL, NULL, "no such option: [%s]", opt);
-
- /* Call option setter first, so it can use both new and old values */
- if (o->setter != NULL)
- o->setter(ctx, val);
-
- /* Free old value if any */
- if (ctx->options[o->index] != NULL)
- free(ctx->options[o->index]);
-
- /* Set new option value */
- ctx->options[o->index] = val ? my_strdup(val) : NULL;
-}
-
-static void
-show_cfg_page(struct shttpd_arg *arg)
-{
- struct shttpd_ctx *ctx = arg->user_data;
- char opt_name[20], value[BUFSIZ];
- const struct opt *o;
-
- opt_name[0] = value[0] = '\0';
-
- if (!strcmp(shttpd_get_env(arg, "REQUEST_METHOD"), "POST")) {
- if (arg->flags & SHTTPD_MORE_POST_DATA)
- return;
- (void) shttpd_get_var("o", arg->in.buf, arg->in.len,
- opt_name, sizeof(opt_name));
- (void) shttpd_get_var("v", arg->in.buf, arg->in.len,
- value, sizeof(value));
- shttpd_set_option(ctx, opt_name, value[0] ? value : NULL);
- }
-
- shttpd_printf(arg, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n"
- "<html><body><h1>SHTTPD v. %s</h1>", shttpd_version());
-
- shttpd_printf(arg, "%s", "<table border=1"
- "<tr><th>Option</th><th>Description</th>"
- "<th colspan=2>Value</th></tr>");
-
- if (opt_name[0] != '\0' && value[0] != '\0')
- shttpd_printf(arg, "<p style='color: green'>Saved: %s=%s</p>",
- opt_name, value[0] ? value : "NULL");
-
-
- for (o = known_options; o->name != NULL; o++) {
- shttpd_printf(arg,
- "<form method=post><tr><td>%s</td><td>%s</td>"
- "<input type=hidden name=o value='%s'>"
- "<td><input type=text name=v value='%s'></td>"
- "<td><input type=submit value=save></td></form></tr>",
- o->name, o->description, o->name,
- ctx->options[o->index] ? ctx->options[o->index] : "");
- }
-
- shttpd_printf(arg, "%s", "</table></body></html>");
- arg->flags |= SHTTPD_END_OF_OUTPUT;
-}
-/*
- * Show usage string and exit.
- */
-void
-usage(const char *prog)
-{
- const struct opt *o;
-
- (void) fprintf(stderr,
- "SHTTPD version %s (c) Sergey Lyubka\n"
- "usage: %s [options] [config_file]\n", VERSION, prog);
-
-#if !defined(NO_AUTH)
- fprintf(stderr, " -A <htpasswd_file> <realm> <user> <passwd>\n");
-#endif /* NO_AUTH */
-
- for (o = known_options; o->name != NULL; o++) {
- (void) fprintf(stderr, " -%s\t%s", o->name, o->description);
- if (o->default_value != NULL)
- fprintf(stderr, " (default: %s)", o->default_value);
- fputc('\n', stderr);
- }
-
- exit(EXIT_FAILURE);
-}
-
-struct shttpd_ctx *shttpd_init(void)
-{
- struct shttpd_ctx *ctx;
- struct tm *tm;
- const struct opt *o;
-
- if ((ctx = calloc(1, sizeof(*ctx))) == NULL)
- elog(E_FATAL, NULL, "cannot allocate shttpd context");
-
- /* Set default values */
- for (o = known_options; o->name != NULL; o++) {
- ctx->options[o->index] = o->default_value == NULL ?
- NULL : my_strdup(o->default_value);
- }
-
- current_time = ctx->start_time = time(NULL);
- tm = localtime(¤t_time);
- tz_offset = 0;
-#if 0
- tm->tm_gmtoff - 3600 * (tm->tm_isdst > 0 ? 1 : 0);
-#endif
-
- InitializeCriticalSection(&ctx->mutex);
-
- LL_INIT(&ctx->connections);
- LL_INIT(&ctx->registered_uris);
- LL_INIT(&ctx->error_handlers);
- LL_INIT(&ctx->acl);
- LL_INIT(&ctx->ssi_funcs);
- LL_INIT(&ctx->listeners);
-
-#ifdef _WIN32
- {WSADATA data; WSAStartup(MAKEWORD(2,2), &data);}
-#endif /* _WIN32 */
-
- return (ctx);
-}
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