]> code.citadel.org Git - citadel.git/blobdiff - citadel/sysdep.c
* Renamed "dynloader" to "serv_extensions" globally. We don't want people
[citadel.git] / citadel / sysdep.c
index 5e0e649331007ffed0e618dbc43de58aa4694887..401f04d3877744be9abd46eccdbfe23053bd0139 100644 (file)
@@ -12,6 +12,9 @@
  *
  */
 
+#ifdef DLL_EXPORT
+#define IN_LIBCIT
+#endif
 
 #include "sysdep.h"
 #include <stdlib.h>
 #include <stdarg.h>
 #include <syslog.h>
 #include <grp.h>
-#ifdef __GNUC__
-#include <malloc.h>
-#endif
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #endif
 #include "citadel.h"
 #include "server.h"
+#include "serv_extensions.h"
 #include "sysdep_decls.h"
 #include "citserver.h"
 #include "support.h"
 #include "config.h"
 #include "database.h"
 #include "housekeeping.h"
-#include "dynloader.h"
 #include "tools.h"
+#include "serv_crypto.h"
 
 #ifdef HAVE_SYS_SELECT_H
 #include <sys/select.h>
@@ -89,7 +90,7 @@ int num_sessions = 0;                         /* Current number of sessions */
 fd_set masterfds;                              /* Master sockets etc. */
 int masterhighest;
 
-static pthread_t initial_thread;               /* tid for main() thread */
+pthread_t initial_thread;              /* tid for main() thread */
 
 
 /*
@@ -100,27 +101,40 @@ static pthread_t initial_thread;          /* tid for main() thread */
  */
 void lprintf(int loglevel, const char *format, ...) {   
         va_list arg_ptr;
-       char buf[4096];
+       char buf[SIZ];
   
         va_start(arg_ptr, format);   
-        vsprintf(buf, format, arg_ptr);   
+        vsnprintf(buf, sizeof(buf), format, arg_ptr);   
         va_end(arg_ptr);   
 
        if (loglevel <= verbosity) { 
                struct timeval tv;
                struct tm *tim;
+               time_t unixtime;
 
                gettimeofday(&tv, NULL);
-               tim = localtime(&(tv.tv_sec));
+               /* Promote to time_t; types differ on some OSes (like darwin) */
+               unixtime = tv.tv_sec;
+               tim = localtime(&unixtime);
                /*
                 * Log provides millisecond accuracy.  If you need
                 * microsecond accuracy and your OS supports it, change
                 * %03ld to %06ld and remove " / 1000" after tv.tv_usec.
                 */
-               fprintf(stderr, "%04d/%02d/%02d %2d:%02d:%02d.%03ld %s",
-                       tim->tm_year + 1900, tim->tm_mon + 1, tim->tm_mday,
-                       tim->tm_hour, tim->tm_min, tim->tm_sec,
-                       tv.tv_usec / 1000, buf);
+               if (CC && CC->cs_pid) {
+                       fprintf(stderr,
+                               "%04d/%02d/%02d %2d:%02d:%02d.%03ld [%3d] %s",
+                               tim->tm_year + 1900, tim->tm_mon + 1,
+                               tim->tm_mday, tim->tm_hour, tim->tm_min,
+                               tim->tm_sec, (long)tv.tv_usec / 1000,
+                               CC->cs_pid, buf);
+               } else {
+                       fprintf(stderr,
+                               "%04d/%02d/%02d %2d:%02d:%02d.%03ld %s",
+                               tim->tm_year + 1900, tim->tm_mon + 1,
+                               tim->tm_mday, tim->tm_hour, tim->tm_min,
+                               tim->tm_sec, (long)tv.tv_usec / 1000, buf);
+               }
                fflush(stderr);
        }
 
@@ -234,6 +248,10 @@ static RETSIGTYPE signal_cleanup(int signum) {
 void init_sysdep(void) {
        int a;
 
+#ifdef HAVE_OPENSSL
+       init_ssl();
+#endif
+
        /* Set up a bunch of semaphores to be used for critical sections */
        for (a=0; a<MAX_SEMAPHORES; ++a) {
                pthread_mutex_init(&Critters[a], NULL);
@@ -464,7 +482,6 @@ DONE:       ++num_sessions;
 }
 
 
-
 /*
  * client_write()   ...    Send binary data to the client.
  */
@@ -474,7 +491,6 @@ void client_write(char *buf, int nbytes)
        int retval;
        int sock;
 
-
        if (CC->redirect_fp != NULL) {
                fwrite(buf, nbytes, 1, CC->redirect_fp);
                return;
@@ -487,6 +503,13 @@ void client_write(char *buf, int nbytes)
                sock = CC->client_socket;
        }
 
+#ifdef HAVE_OPENSSL
+       if (CC->redirect_ssl) {
+               client_write_ssl(buf, nbytes);
+               return;
+       }
+#endif
+
        while (bytes_written < nbytes) {
                retval = write(sock, &buf[bytes_written],
                        nbytes - bytes_written);
@@ -533,6 +556,11 @@ int client_read_to(char *buf, int bytes, int timeout)
        struct timeval tv;
        int retval;
 
+#ifdef HAVE_OPENSSL
+       if (CC->redirect_ssl) {
+               return (client_read_ssl(buf, bytes, timeout));
+       }
+#endif
        len = 0;
        while(len<bytes) {
                FD_ZERO(&rfds);
@@ -564,7 +592,7 @@ int client_read_to(char *buf, int bytes, int timeout)
  * (This is implemented in terms of client_read_to() and could be
  * justifiably moved out of sysdep.c)
  */
-int client_read(char *buf, int bytes)
+inline int client_read(char *buf, int bytes)
 {
        return(client_read_to(buf, bytes, config.c_sleeping));
 }
@@ -671,73 +699,6 @@ void start_daemon(int do_close_stdio) {
 
 
 
-/*
- * Tie in to the 'netsetup' program.
- *
- * (We're going to hope that netsetup never feeds more than 4096 bytes back.)
- */
-void cmd_nset(char *cmdbuf)
-{
-       int retcode;
-       char fbuf[4096];
-       FILE *netsetup;
-       int ch;
-       int a, b;
-       char netsetup_args[3][SIZ];
-
-       if (CC->usersupp.axlevel < 6) {
-               cprintf("%d Higher access required.\n", 
-                       ERROR + HIGHER_ACCESS_REQUIRED);
-               return;
-       }
-
-       for (a=1; a<=3; ++a) {
-               if (num_parms(cmdbuf) >= a) {
-                       extract(netsetup_args[a-1], cmdbuf, a-1);
-                       for (b=0; b<strlen(netsetup_args[a-1]); ++b) {
-                               if (netsetup_args[a-1][b] == 34) {
-                                       netsetup_args[a-1][b] = '_';
-                               }
-                       }
-               }
-               else {
-                       netsetup_args[a-1][0] = 0;
-               }
-       }
-
-       sprintf(fbuf, "./netsetup \"%s\" \"%s\" \"%s\" </dev/null 2>&1",
-               netsetup_args[0], netsetup_args[1], netsetup_args[2]);
-       netsetup = popen(fbuf, "r");
-       if (netsetup == NULL) {
-               cprintf("%d %s\n", ERROR, strerror(errno));
-               return;
-       }
-
-       fbuf[0] = 0;
-       while (ch = getc(netsetup), (ch > 0)) {
-               fbuf[strlen(fbuf)+1] = 0;
-               fbuf[strlen(fbuf)] = ch;
-       }
-
-       retcode = pclose(netsetup);
-
-       if (retcode != 0) {
-               for (a=0; a<strlen(fbuf); ++a) {
-                       if (fbuf[a] < 32) fbuf[a] = 32;
-               }
-               fbuf[245] = 0;
-               cprintf("%d %s\n", ERROR, fbuf);
-               return;
-       }
-
-       cprintf("%d Command succeeded.  Output follows:\n", LISTING_FOLLOWS);
-       cprintf("%s", fbuf);
-       if (fbuf[strlen(fbuf)-1] != 10) cprintf("\n");
-       cprintf("000\n");
-}
-
-
-
 /*
  * Generic routine to convert a login name to a full name (gecos)
  * Returns nonzero if a conversion took place
@@ -759,27 +720,40 @@ int convert_login(char NameToConvert[]) {
        }
 }
 
-static struct worker_node {
-       pthread_t tid;
-       struct worker_node *next;
-} *worker_list = NULL;
+struct worker_node *worker_list = NULL;
 
 
 /*
  * create a worker thread. this function must always be called from within
  * an S_WORKER_LIST critical section!
  */
-static void create_worker(void) {
+void create_worker(void) {
        int ret;
-       struct worker_node *n = mallok(sizeof *n);
+       struct worker_node *n;
+       pthread_attr_t attr;
 
+       n = mallok(sizeof(struct worker_node));
        if (n == NULL) {
                lprintf(1, "can't allocate worker_node, exiting\n");
                time_to_die = -1;
                return;
        }
 
-       if ((ret = pthread_create(&n->tid, NULL, worker_thread, NULL) != 0))
+       if ((ret = pthread_attr_init(&attr))) {
+               lprintf(1, "pthread_attr_init: %s\n", strerror(ret));
+               time_to_die = -1;
+               return;
+       }
+
+       /* we seem to need something bigger than FreeBSD's default 64k stack */
+
+       if ((ret = pthread_attr_setstacksize(&attr, 128 * 1024))) {
+               lprintf(1, "pthread_attr_setstacksize: %s\n", strerror(ret));
+               time_to_die = -1;
+               return;
+       }
+
+       if ((ret = pthread_create(&n->tid, &attr, worker_thread, NULL) != 0))
        {
 
                lprintf(1, "Can't create worker thread: %s\n",
@@ -936,200 +910,10 @@ void init_master_fdset(void) {
 }
 
 
-
-/*
- * Here's where it all begins.
- */
-int main(int argc, char **argv)
-{
-       char tracefile[128];            /* Name of file to log traces to */
-       int a, i;                       /* General-purpose variables */
-       struct passwd *pw;
-       int drop_root_perms = 1;
-       char *moddir;
-       struct worker_node *wnp;
-        
-       /* specify default port name and trace file */
-       strcpy(tracefile, "");
-
-       /* initialize the master context */
-       InitializeMasterCC();
-
-       /* parse command-line arguments */
-       for (a=1; a<argc; ++a) {
-
-               /* -t specifies where to log trace messages to */
-               if (!strncmp(argv[a], "-t", 2)) {
-                       strcpy(tracefile, argv[a]);
-                       strcpy(tracefile, &tracefile[2]);
-                       freopen(tracefile, "r", stdin);
-                       freopen(tracefile, "w", stdout);
-                       freopen(tracefile, "w", stderr);
-               }
-
-               /* run in the background if -d was specified */
-               else if (!strcmp(argv[a], "-d")) {
-                       start_daemon( (strlen(tracefile) > 0) ? 0 : 1 ) ;
-               }
-
-               /* -x specifies the desired logging level */
-               else if (!strncmp(argv[a], "-x", 2)) {
-                       verbosity = atoi(&argv[a][2]);
-               }
-
-               else if (!strncmp(argv[a], "-h", 2)) {
-                       safestrncpy(bbs_home_directory, &argv[a][2],
-                                   sizeof bbs_home_directory);
-                       home_specified = 1;
-               }
-
-               else if (!strncmp(argv[a], "-f", 2)) {
-                       do_defrag = 1;
-               }
-
-               /* -r tells the server not to drop root permissions. don't use
-                * this unless you know what you're doing. this should be
-                * removed in the next release if it proves unnecessary. */
-               else if (!strcmp(argv[a], "-r"))
-                       drop_root_perms = 0;
-
-               /* any other parameter makes it crash and burn */
-               else {
-                       lprintf(1,      "citserver: usage: "
-                                       "citserver [-tTraceFile] [-d] [-f]"
-                                       " [-xLogLevel] [-hHomeDir]\n");
-                       exit(1);
-               }
-
-       }
-
-       /* Tell 'em who's in da house */
-       lprintf(1,
-"\nMultithreaded message server for Citadel/UX\n"
-"Copyright (C) 1987-2001 by the Citadel/UX development team.\n"
-"Citadel/UX is free software, covered by the GNU General Public License, and\n"
-"you are welcome to change it and/or distribute copies of it under certain\n"
-"conditions.  There is absolutely no warranty for this software.  Please\n"
-"read the 'COPYING.txt' file for details.\n\n");
-
-       /* Initialize... */
-       init_sysdep();
-       openlog("citserver", LOG_PID, LOG_USER);
-
-       /* Load site-specific parameters */
-       lprintf(7, "Loading citadel.config\n");
-       get_config();
-
-
-       /*
-        * Do non system dependent startup functions.
-        */
-       master_startup();
-
-       /*
-        * Bind the server to a Unix-domain socket.
-        */
-       CtdlRegisterServiceHook(0,
-                               "citadel.socket",
-                               citproto_begin_session,
-                               do_command_loop);
-
-       /*
-        * Bind the server to our favorite TCP port (usually 504).
-        */
-       CtdlRegisterServiceHook(config.c_port_number,
-                               NULL,
-                               citproto_begin_session,
-                               do_command_loop);
-
-       /*
-        * Load any server-side modules (plugins) available here.
-        */
-       lprintf(7, "Initializing loadable modules\n");
-       if ((moddir = malloc(strlen(bbs_home_directory) + 9)) != NULL) {
-               sprintf(moddir, "%s/modules", bbs_home_directory);
-               DLoader_Init(moddir);
-               free(moddir);
-       }
-
-       /*
-        * The rescan pipe exists so that worker threads can be woken up and
-        * told to re-scan the context list for fd's to listen on.  This is
-        * necessary, for example, when a context is about to go idle and needs
-        * to get back on that list.
-        */
-       if (pipe(rescan)) {
-               lprintf(1, "Can't create rescan pipe!\n");
-               exit(errno);
-       }
-
-       init_master_fdset();
-
-       /*
-        * Now that we've bound the sockets, change to the BBS user id and its
-        * corresponding group ids
-        */
-       if (drop_root_perms) {
-               if ((pw = getpwuid(BBSUID)) == NULL)
-                       lprintf(1, "WARNING: getpwuid(%d): %s\n"
-                                  "Group IDs will be incorrect.\n", BBSUID,
-                               strerror(errno));
-               else {
-                       initgroups(pw->pw_name, pw->pw_gid);
-                       if (setgid(pw->pw_gid))
-                               lprintf(3, "setgid(%d): %s\n", pw->pw_gid,
-                                       strerror(errno));
-               }
-               lprintf(7, "Changing uid to %d\n", BBSUID);
-               if (setuid(BBSUID) != 0) {
-                       lprintf(3, "setuid() failed: %s\n", strerror(errno));
-               }
-       }
-
-       /* We want to check for idle sessions once per minute */
-       CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER);
-
-       /*
-        * Now create a bunch of worker threads.
-        */
-       lprintf(9, "Starting %d worker threads\n", config.c_min_workers-1);
-       begin_critical_section(S_WORKER_LIST);
-       for (i=0; i<(config.c_min_workers-1); ++i) {
-               create_worker();
-       }
-       end_critical_section(S_WORKER_LIST);
-
-       /* Now this thread can become a worker as well. */
-       initial_thread = pthread_self();
-       worker_thread(NULL);
-
-       /* Server is exiting. Wait for workers to shutdown. */
-       lprintf(7, "Waiting for worker threads to shut down\n");
-
-       begin_critical_section(S_WORKER_LIST);
-       while (worker_list != NULL) {
-               wnp = worker_list;
-               worker_list = wnp->next;
-
-               /* avoid deadlock with an exiting thread */
-               end_critical_section(S_WORKER_LIST);
-               if ((i = pthread_join(wnp->tid, NULL)))
-                       lprintf(1, "pthread_join: %s\n", strerror(i));
-               phree(wnp);
-               begin_critical_section(S_WORKER_LIST);
-       }
-       end_critical_section(S_WORKER_LIST);
-
-       master_cleanup();
-
-       return(0);
-}
-
-
 /*
  * Bind a thread to a context.  (It's inline merely to speed things up.)
  */
-inline void become_session(struct CitContext *which_con) {
+INLINE void become_session(struct CitContext *which_con) {
        pthread_setspecific(MyConKey, (void *)which_con );
 }
 
@@ -1318,6 +1102,3 @@ SETUP_FD: memcpy(&readfds, &masterfds, sizeof masterfds);
        --num_threads;
        return NULL;
 }
-
-
-